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AWS BMg-1 vs. C69710 Brass

AWS BMg-1 belongs to the magnesium alloys classification, while C69710 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BMg-1 and the bottom bar is C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
110
Elongation at Break, % 3.8
25
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 18
41
Shear Strength, MPa 100
300
Tensile Strength: Ultimate (UTS), MPa 180
470
Tensile Strength: Yield (Proof), MPa 110
230

Thermal Properties

Latent Heat of Fusion, J/g 350
240
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 600
930
Melting Onset (Solidus), °C 440
880
Specific Heat Capacity, J/kg-K 980
400
Thermal Conductivity, W/m-K 76
40
Thermal Expansion, µm/m-K 26
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 55
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
26
Density, g/cm3 1.8
8.3
Embodied Carbon, kg CO2/kg material 22
2.7
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 980
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
99
Resilience: Unit (Modulus of Resilience), kJ/m3 120
250
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 66
19
Strength to Weight: Axial, points 27
16
Strength to Weight: Bending, points 39
16
Thermal Diffusivity, mm2/s 43
12
Thermal Shock Resistance, points 10
16

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0
Arsenic (As), % 0
0.030 to 0.060
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
75 to 80
Iron (Fe), % 0 to 0.0050
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0 to 0.4
Nickel (Ni), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.050
2.5 to 3.5
Zinc (Zn), % 1.7 to 2.3
13.8 to 22
Residuals, % 0 to 0.3
0 to 0.5